grub-mkfont: add page (#23682)

Co-authored-by: Wiktor Perskawiec <wiktor@perskawiec.cc>
Co-authored-by: Managor <42655600+Managor@users.noreply.github.com>

Author: 3 people

pages/linux/grub-mkfont.md

@@ -0,0 +1,28 @@
+# grub-mkfont
+
+> Convert common font file formats into the PF2 format used by GRUB.
+> More information: <https://manned.org/grub-mkfont>.
+
+- Convert a font to PF2:
+
+`grub-mkfont {{[-o|--output]}} {{path/to/output.pf2}} {{path/to/font.ttf}}`
+
+- Convert a font at a specific size:
+
+`grub-mkfont {{[-o|--output]}} {{path/to/output.pf2}} {{[-s|--size]}} {{24}} {{path/to/font.ttf}}`
+
+- Convert only characters in specific Unicode ranges:
+
+`grub-mkfont {{[-o|--output]}} {{path/to/output.pf2}} {{[-r|--range]}} {{0x20-0x7E,0xA0-0xFF}} {{path/to/font.ttf}}`
+
+- Set the output font family name:
+
+`grub-mkfont {{[-o|--output]}} {{path/to/output.pf2}} {{[-n|--name]}} "{{font_family_name}}" {{path/to/font.ttf}}`
+
+- Convert a font to bold while forcing automatic hinting:
+
+`grub-mkfont {{[-o|--output]}} {{path/to/output.pf2}} {{[-b|--bold]}} {{[-a|--force-autohint]}} {{path/to/font.ttf}}`
+
+- Disable hinting and ignore embedded bitmap strikes:
+
+`grub-mkfont {{[-o|--output]}} {{path/to/output.pf2}} --no-hinting --no-bitmap {{path/to/font.ttf}}`